Drain Line Connection, Brine Line Connection

Drain Line Connection

Note: Standard commercial practices are expressed here. Local codes may require changes to the following suggestions. Check with local authorities before installing a water conditioning system.

The system should be above, and not more than 20 feet (6.1 m) from a drain. Connect an appropriate fitting and 1/2-inch (1.3-cm) plastic tubing to the drain line connection on the rear of the control valve.

If the backwash flow is more than 5 gpm or if the unit is located more than 20 feet (6.1 m) from the drain, use 3/4- inch (1.9-cm) tubing for runs up to 40 feet (12.2 m). Also, purchase appropriate fitting to connect the 3/4-inch tubing to the 1/2-inch NPT drain connection.

If unit is located where the drain line must be elevated, you may elevate the line up to 5 feet (1.5 m) providing the run does not exceed 15 feet (4.6 m) and water pressure at the conditioners is not less than 40 psi (2.8 bar).

Where drain line is elevated but empties into a drain below the level of the control valve, form a 7-inch (18-cm) loop at the far end of the line so that the bottom of the loop is level with the drain line connection. This will provide an adequate siphon trap.Where a drain empties into an overhead sewer line, a sink-type trap must be used. Secure the end of the drain line to prevent it from moving (Figure 11).

Brine Line Connection

It is recommended that separate brine lines be used for each tank.

A regenerant tank aircheck is not required when using a

255valve with the built-in aircheck. Doing so will cause premature checking and may result in hard water or regenerant tank overflow. The 255 aircheck is available standard with a 1/4" NPT tube compression fitting. The use of Teflon tape is required on the 1/4" NPT connection.

Install an appropriate fitting onto the 1/4-inch male NPT connection on the air check (Figure 9), and install a length of 3/8-inch polyethylene tubing between the air check fitting and the brine pick-up tube at the brine tank. If you are using a brine valve remove the ball in the air check to avoid possible premature checking.

	Regenerant Tank
Check Ball	Tube Connection
Check Ball
	Air Check

Figure 9

Note: Make sure that all fittings and connections are vacuum tight so that premature checking does not take place. Premature checking occurs when the ball in the air check falls to the bottom before all brine is drawn out of the brine tank.

Brine Tank Overflow Line Connection

In the event of a malfunction, the brine tank overflow connection directs overflow to the drain instead of spilling it on the floor where it could cause water damage. Complete the following steps to connect the overflow fitting to the brine tank:

1.Locate the fitting hole on the side of the brine tank.

2.Insert the overflow fitting (not supplied) into the tank and tighten with the plastic thumb nut and gasket as illustrated in Figure 10.

Figure 10 Brine Tank Drain

3.Attach a length of 1/2-inch (1.3-cm) tubing (not supplied) to the fitting and run to the drain.